It is hypothesized that there will be a change in Mean Kurtosis in the thalamus, corpus callosum and hippo campus from baseline to follow-up. Secondary we examine change in Mean Diffusivity and Fractional Anisotropy in the thalamus, corpus callosum and hippo campus from baseline to follow-up and for both DKI and DTI we examine the difference between the mTBI subjects and healthy controls in the acute stage and at follow-up. Moreover we examine correlation of MRI markers the severity of PCS acutely and at follow up. Finally rs-fMRI and default mode network is expected to differ between the two groups